What a casino bonus actually costs, in pounds

A bonus is a loan of playing time, and the wagering requirement is its price. The arithmetic is simple and rarely written down.

The basic sum

At a 10x requirement, £100 of bonus funds means £1,000 of turnover before a withdrawal is possible. Not £1,000 of deposits — £1,000 of total stakes, which is a very different quantity and the one people underestimate.

Britain caps wagering at 10x, which is unusually low. Markets without such a cap routinely run 35x or 50x, where a £100 bonus means £3,500 or £5,000 of turnover. The cap is one of the more consequential UK rules and one of the least discussed.

What the cap does not cover

Game weighting. Not all play counts equally toward the requirement. Slots typically contribute 100%, table games often 10% or less. A £1,000 requirement met on slots becomes £10,000 of turnover if it is worked through on blackjack at 10% weighting.

Maximum bet while wagering. Most terms cap the stake per spin while a bonus is active, commonly at £5 or lower. Exceeding it can void the bonus outright.

Time limits. Requirements usually expire, often in seven to thirty days. An unmet requirement at expiry takes the bonus and anything won from it.

None of these are hidden — they are in the terms. They are simply never in the headline.

When a bonus makes a session worse

With the £5 stake cap in force, £1,000 of turnover is a minimum of 200 spins at maximum stake, and realistically several hundred more at ordinary stakes. For someone intending a short session, a bonus converts a casual hour into a target-driven one.

That is the mechanism worth understanding. The bonus is not a gift with strings; it is a change to how the session is played, and the change usually means playing longer than intended.

No-wagering offers

Several UK operators built their positioning on removing the requirement entirely — smaller amounts, but withdrawable immediately. Where the alternative is a larger bonus at 10x with weighting and a time limit, the smaller no-wagering offer is frequently worth more in practice.

The question to ask

Not “how big is the bonus” but “how much turnover does it require, at what weighting, by when”. If those three numbers are not obvious within a minute of reading the terms, that is itself an answer.

The arithmetic at the stake cap

The wagering cap and the stake cap interact, and the result is a figure worth having before accepting an offer. At the 10x cap, a £50 bonus requires £500 of turnover. At the £5 slot stake ceiling that is a minimum of one hundred spins, and at a realistic average stake of £1 it is five hundred. Five hundred spins at a five-second minimum pace is roughly forty minutes of continuous play with no breaks.

None of that is hidden. It simply never appears next to the headline number, because the headline number is the marketing and the turnover requirement is the price.

Game weighting is where the sum quietly doubles

Turnover requirements are rarely satisfied equally by every game. Slots typically count in full, while table games count at a fraction — often ten or twenty per cent, sometimes nothing. A player who prefers blackjack and accepts a slots-weighted bonus has agreed to a requirement several times larger than the stated multiple.

The weighting table is always published, usually a click below the offer. Reading it is the difference between a 10x requirement and an effective 50x one, and no rule caps the weighting.